PDBe 4waf

X-ray diffraction
2.39Å resolution

Crystal Structure of a novel tetrahydropyrazolo[1,5-a]pyrazine in an engineered PI3K alpha


Function and Biology Details

Structure analysis Details

Assembly composition:
hetero dimer (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit alpha isoform Chain: A
Phosphatidylinositol 3-kinase regulatory subunit alpha Chain: B
Molecule details ›
Chain: B
Length: 323 amino acids
Theoretical weight: 38.74 KDa
Source organism: Homo sapiens
Expression system: Trichoplusia ni
  • Canonical: P27986 (Residues: 306-617; Coverage: 43%)
  • Best match: P27986-5 (Residues: 1-254)
Gene names: GRB1, PIK3R1
Sequence domains:

Ligands and Environments

1 bound ligand:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 17-ID
Spacegroup: P212121
Unit cell:
a: 104.483Å b: 106.525Å c: 133.507Å
α: 90° β: 90° γ: 90°
R R work R free
0.202 0.199 0.247
Expression system: Trichoplusia ni